Move tosca-controlloop src directries to new modulestosca-poc

This is the second stage of the TOSCA Controlloop merge.

In this review, the src directories of the old tosca-controlloop modules
are moved to the new modules off the root of the clamp repo and the
pom.xml files are updated with dependencies to allow the build of the
moved modules to run.

So the changes are renaming of files and updates of POM files in the
modules to which src directories are added so that the build works, and
of course deletion of the tosca-controlloop directory and its sub-
modules

The third and final review will follow this, which will merge the
tosca-poc branch onto master, in effect merging this review to master.

The differences with the clamp master repo are shown here:
diff -qr clamp clamp-tp | diff_filter.sh
Files clamp/INFO.yaml and clamp-tp/INFO.yaml differ
Only in clamp-tp/common: src
Only in clamp-tp/models: src
Files clamp/participant/participant-impl/participant-impl-dcae/pom.xml and clamp-tp/participant/participant-impl/participant-impl-dcae/pom.xml differ
Only in clamp-tp/participant/participant-impl/participant-impl-dcae: src
Only in clamp-tp/participant/participant-impl/participant-impl-policy: src
Only in clamp-tp/participant/participant-impl/participant-impl-simulator: src
Files clamp/participant/participant-impl/pom.xml and clamp-tp/participant/participant-impl/pom.xml differ
Only in clamp-tp/participant/participant-intermediary: src
Files clamp/participant/pom.xml and clamp-tp/participant/pom.xml differ
Files clamp/pom.xml and clamp-tp/pom.xml differ
Only in clamp/releases: 6.0.1-container.yaml
Only in clamp/releases: 6.0.1.yaml
Only in clamp/releases: 6.0.2-container.yaml
Only in clamp/releases: 6.0.2.yaml
Only in clamp/releases: 6.1.0-container.yaml
Only in clamp/releases: 6.1.0.yaml
Only in clamp/releases: 6.1.1-container.yaml
Only in clamp/releases: 6.1.1.yaml
Files clamp/runtime/pom.xml and clamp-tp/runtime/pom.xml differ
Only in clamp-tp: runtime-controlloop

Issue-ID: POLICY-3215
Change-Id: I0e69e3c566ea387d61f77cfa118bb6d67b4f8253
Signed-off-by: liamfallon <liam.fallon@est.tech>

7 files changed, 1114 insertions, 0 deletions

diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java
new file mode 100644
index 000000000..040b33f5e
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClientTest.java
@@ -0,0 +1,128 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.httpclient;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
+import static org.junit.Assert.assertTrue;
+import static org.mockserver.model.HttpRequest.request;
+import static org.mockserver.model.HttpResponse.response;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.mockserver.integration.ClientAndServer;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+/**
+ * Class to perform unit test of {@link ClampHttpClient}.
+ *
+ */
+public class ClampHttpClientTest {
+
+    private static final String LOOP = "pmsh_loop";
+    private static final String BLUEPRINT_DEPLOYED = "BLUEPRINT_DEPLOYED";
+
+    private static ClientAndServer mockServer;
+    private static ParticipantDcaeParameters parameters;
+    public static final Coder CODER = new StandardCoder();
+
+    /**
+     * Set up.
+     */
+    @BeforeClass
+    public static void setUp() {
+        CommonTestData commonTestData = new CommonTestData();
+
+        parameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+
+        mockServer = ClientAndServer.startClientAndServer(parameters.getClampClientParameters().getPort());
+
+        mockServer.when(request().withMethod("GET").withPath("/restservices/clds/v2/loop/getstatus/" + LOOP))
+                .respond(response().withBody(CommonTestData.createJsonStatus(BLUEPRINT_DEPLOYED)).withStatusCode(200));
+
+        mockServer.when(request().withMethod("PUT").withPath("/restservices/clds/v2/loop/deploy/" + LOOP))
+                .respond(response().withStatusCode(202));
+
+        mockServer.when(request().withMethod("PUT").withPath("/restservices/clds/v2/loop/undeploy/" + LOOP))
+                .respond(response().withStatusCode(202));
+    }
+
+    @AfterClass
+    public static void stopServer() {
+        mockServer.stop();
+        mockServer = null;
+    }
+
+    @Test
+    public void test_getstatus() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            Loop status = client.getstatus(LOOP);
+
+            String json = CommonTestData.createJsonStatus(BLUEPRINT_DEPLOYED);
+            Loop loop = CODER.convert(json, Loop.class);
+
+            assertThat(ClampHttpClient.getStatusCode(status)).isEqualTo(ClampHttpClient.getStatusCode(loop));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_deploy() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            assertTrue(client.deploy(LOOP));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_undeploy() throws Exception {
+        try (ClampHttpClient client = new ClampHttpClient(parameters.getClampClientParameters())) {
+
+            assertTrue(client.undeploy(LOOP));
+
+        } catch (Exception e) {
+            fail(e.getMessage());
+        }
+    }
+
+    @Test
+    public void test_getStatusCodeNull() {
+        assertThat(ClampHttpClient.getStatusCode(null)).isEqualTo(ClampHttpClient.STATUS_NOT_FOUND);
+    }
+
+    @Test
+    public void test_getStatusEmptyMap() {
+        assertThat(ClampHttpClient.getStatusCode(new Loop())).isEqualTo(ClampHttpClient.STATUS_NOT_FOUND);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java
new file mode 100644
index 000000000..bcfaf8bb9
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/CommonTestData.java
@@ -0,0 +1,294 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+import javax.ws.rs.core.Response;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.common.endpoints.parameters.TopicParameters;
+import org.onap.policy.common.parameters.ParameterGroup;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
+
+/**
+ * Class to hold/create all parameters for test cases.
+ */
+public class CommonTestData {
+    public static final String PARTICIPANT_GROUP_NAME = "ControlLoopParticipantGroup";
+    public static final String DESCRIPTION = "Participant description";
+    public static final long TIME_INTERVAL = 2000;
+    public static final List<TopicParameters> TOPIC_PARAMS = Arrays.asList(getTopicParams());
+    private static final String REST_CLIENT_PASSWORD = "password";
+    private static final String REST_CLIENT_USER = "admin";
+    private static final int REST_CLAMP_PORT = 8443;
+    private static final int REST_CONSUL_PORT = 31321;
+    private static final String REST_CLAMP_HOST = "localhost";
+    private static final String REST_CONSUL_HOST = "consul";
+    private static final boolean REST_CLAMP_HTTPS = false;
+    private static final boolean REST_CONSUL_HTTPS = false;
+    private static final boolean REST_CLIENT_AAF = false;
+
+    public static final Coder coder = new StandardCoder();
+
+    /**
+     * Converts the contents of a map to a parameter class.
+     *
+     * @param source property map
+     * @param clazz class of object to be created from the map
+     * @return a new object represented by the map
+     */
+    public <T extends ParameterGroup> T toObject(final Map<String, Object> source, final Class<T> clazz) {
+        try {
+            return coder.convert(source, clazz);
+
+        } catch (final CoderException e) {
+            throw new RuntimeException("cannot create " + clazz.getName() + " from map", e);
+        }
+    }
+
+    /**
+     * Returns a property map for a ApexStarterParameterGroup map for test cases.
+     *
+     * @param name name of the parameters
+     *
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getParticipantParameterGroupMap(final String name) {
+        final Map<String, Object> map = new TreeMap<>();
+
+        map.put("name", name);
+        map.put("clampClientParameters", getClampClientParametersMap(false));
+        map.put("consulClientParameters", getConsulClientParametersMap(false));
+        map.put("intermediaryParameters", getIntermediaryParametersMap(false));
+        map.put("databaseProviderParameters", getDatabaseProviderParametersMap(false));
+        return map;
+    }
+
+    /**
+     * Returns a property map for a RestServerParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getClampClientParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        map.put("https", REST_CLAMP_HTTPS);
+        map.put("aaf", REST_CLIENT_AAF);
+
+        if (!isEmpty) {
+            map.put("host", REST_CLAMP_HOST);
+            map.put("port", REST_CLAMP_PORT);
+            map.put("userName", REST_CLIENT_USER);
+            map.put("password", REST_CLIENT_PASSWORD);
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a RestServerParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getConsulClientParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        map.put("https", REST_CONSUL_HTTPS);
+        map.put("aaf", REST_CLIENT_AAF);
+
+        if (!isEmpty) {
+            map.put("host", REST_CONSUL_HOST);
+            map.put("port", REST_CONSUL_PORT);
+            map.put("userName", REST_CLIENT_USER);
+            map.put("password", REST_CLIENT_PASSWORD);
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a databaseProviderParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getDatabaseProviderParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "PolicyProviderParameterGroup");
+            map.put("implementation", "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl");
+            map.put("databaseDriver", "org.h2.Driver");
+            map.put("databaseUrl", "jdbc:h2:mem:testdb");
+            map.put("databaseUser", "policy");
+            map.put("databasePassword", "P01icY");
+            map.put("persistenceUnit", "ToscaConceptTest");
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a intermediaryParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getIntermediaryParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "Participant parameters");
+            map.put("reportingTimeInterval", TIME_INTERVAL);
+            map.put("description", DESCRIPTION);
+            map.put("participantId", getParticipantId());
+            map.put("participantType", getParticipantId());
+            map.put("clampControlLoopTopics", getTopicParametersMap(false));
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a TopicParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getTopicParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("topicSources", TOPIC_PARAMS);
+            map.put("topicSinks", TOPIC_PARAMS);
+        }
+        return map;
+    }
+
+    /**
+     * Returns topic parameters for test cases.
+     *
+     * @return topic parameters
+     */
+    public static TopicParameters getTopicParams() {
+        final TopicParameters topicParams = new TopicParameters();
+        topicParams.setTopic("POLICY-CLRUNTIME-PARTICIPANT");
+        topicParams.setTopicCommInfrastructure("dmaap");
+        topicParams.setServers(Arrays.asList("localhost"));
+        return topicParams;
+    }
+
+    /**
+     * Returns participantId for test cases.
+     *
+     * @return participant Id
+     */
+    public static ToscaConceptIdentifier getParticipantId() {
+        final ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+        return participantId;
+    }
+
+    /**
+     * Gets the standard participant parameters.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public ParticipantDcaeParameters getParticipantParameterGroup(int port) {
+        try {
+            return coder.decode(getParticipantParameterGroupAsString(port), ParticipantDcaeParameters.class);
+
+        } catch (CoderException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read participant parameters",
+                    e);
+        }
+    }
+
+    /**
+     * Gets the standard participant parameters, as a String.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public static String getParticipantParameterGroupAsString(int port) {
+
+        try {
+            File file = new File(getParamFile());
+            String json = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
+
+            json = json.replace("${port}", String.valueOf(port));
+            json = json.replace("${dbName}", "jdbc:h2:mem:testdb");
+
+            return json;
+
+        } catch (IOException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read participant parameters",
+                    e);
+
+        }
+    }
+
+    /**
+     * Gets the full path to the parameter file, which may vary depending on whether or
+     * not this is an end-to-end test.
+     *
+     * @return the parameter file name
+     */
+    private static String getParamFile() {
+        return "src/test/resources/parameters/TestParametersStd.json";
+    }
+
+    /**
+     * Nulls out a field within a JSON string.
+     *
+     * @param json JSON string
+     * @param field field to be nulled out
+     * @return a new JSON string with the field nulled out
+     */
+    public String nullifyField(String json, String field) {
+        return json.replace(field + "\"", field + "\":null, \"" + field + "Xxx\"");
+    }
+
+    /**
+     * create Json response from getstatus call.
+     *
+     * @param status the status of Partecipant
+     * @return the JSON
+     */
+    public static String createJsonStatus(String status) {
+        try {
+            File file = new File("src/test/resources/rest/status.json");
+            String json = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
+            return json.replace("${status}", status);
+
+        } catch (IOException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE, "cannot read json file", e);
+        }
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java
new file mode 100644
index 000000000..058a3dae4
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameterHandler.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.FileNotFoundException;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeCommandLineArguments;
+import org.onap.policy.common.utils.coder.CoderException;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterHandler}.
+ *
+ */
+public class TestParticipantDcaeParameterHandler {
+
+    @Test
+    public void testParameterHandlerNoParameterFile() throws ControlLoopException {
+        final String[] emptyArgumentString = { "-c", "src/test/resources/parameters/NoParametersFile.json" };
+
+        final ParticipantDcaeCommandLineArguments emptyArguments = new ParticipantDcaeCommandLineArguments();
+        emptyArguments.parse(emptyArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantDcaeParameterHandler().getParameters(emptyArguments))
+            .hasCauseInstanceOf(CoderException.class)
+            .hasRootCauseInstanceOf(FileNotFoundException.class);
+    }
+
+    @Test
+    public void testParameterHandlerInvalidParameters() throws ControlLoopException {
+        final String[] invalidArgumentString = { "-c", "src/test/resources/parameters/InvalidParameters.json" };
+
+        final ParticipantDcaeCommandLineArguments invalidArguments =
+                new ParticipantDcaeCommandLineArguments();
+        invalidArguments.parse(invalidArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantDcaeParameterHandler().getParameters(invalidArguments))
+            .hasMessageStartingWith("error reading parameters from")
+            .hasCauseInstanceOf(CoderException.class);
+    }
+
+    @Test
+    public void testParticipantParameterGroup() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json" };
+
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        arguments.parse(participantConfigParameters);
+
+        final ParticipantDcaeParameters parGroup = new ParticipantDcaeParameterHandler()
+                .getParameters(arguments);
+        assertTrue(arguments.checkSetConfigurationFilePath());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, parGroup.getName());
+    }
+
+    @Test
+    public void testParticipantVersion() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-v" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThat(arguments.parse(participantConfigParameters)).startsWith(
+                "ONAP Tosca defined control loop Participant");
+    }
+
+    @Test
+    public void testParticipantHelp() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-h" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThat(arguments.parse(participantConfigParameters)).startsWith("usage:");
+    }
+
+    @Test
+    public void testParticipantInvalidOption() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-d" };
+        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
+        assertThatThrownBy(() -> arguments.parse(participantConfigParameters))
+            .hasMessageStartingWith("invalid command line arguments specified");
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java
new file mode 100644
index 000000000..edb429322
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/TestParticipantDcaeParameters.java
@@ -0,0 +1,90 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
+import org.onap.policy.common.parameters.ValidationResult;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterGroup}.
+ *
+ */
+public class TestParticipantDcaeParameters {
+    CommonTestData commonTestData = new CommonTestData();
+
+    @Test
+    public void testParticipantParameterGroup_Named() {
+        final ParticipantDcaeParameters participantParameters = new ParticipantDcaeParameters("my-name");
+        assertEquals("my-name", participantParameters.getName());
+    }
+
+    @Test
+    public void testParticipantParameterGroup() {
+        final ParticipantDcaeParameters participantParameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+        final ParticipantIntermediaryParameters participantIntermediaryParameters = participantParameters
+                .getIntermediaryParameters();
+        final TopicParameterGroup topicParameterGroup  = participantParameters.getIntermediaryParameters()
+                .getClampControlLoopTopics();
+        final ValidationResult validationResult = participantParameters.validate();
+        assertTrue(validationResult.isValid());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, participantParameters.getName());
+        assertEquals(CommonTestData.TIME_INTERVAL, participantIntermediaryParameters.getReportingTimeInterval());
+        assertEquals(CommonTestData.DESCRIPTION, participantIntermediaryParameters.getDescription());
+        assertEquals(CommonTestData.TOPIC_PARAMS, topicParameterGroup.getTopicSinks());
+        assertEquals(CommonTestData.TOPIC_PARAMS, topicParameterGroup.getTopicSources());
+    }
+
+    @Test
+    public void testParticipantParameterGroup_EmptyParticipantIntermediaryParameters() {
+        final Map<String, Object> map =
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME);
+        map.replace("intermediaryParameters", commonTestData.getIntermediaryParametersMap(true));
+        final ParticipantDcaeParameters participantParameters =
+                commonTestData.toObject(map, ParticipantDcaeParameters.class);
+        final ValidationResult validationResult = participantParameters.validate();
+        assertNull(validationResult.getResult());
+    }
+
+    @Test
+    public void testParticipantParameterGroup_EmptyTopicParameters() {
+        final Map<String, Object> map =
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME);
+        final Map<String, Object> intermediaryParametersMap = commonTestData.getIntermediaryParametersMap(false);
+        intermediaryParametersMap.put("clampControlLoopTopics", commonTestData.getTopicParametersMap(true));
+        map.replace("intermediaryParameters", intermediaryParametersMap);
+
+        final ParticipantDcaeParameters participantParameters =
+                commonTestData.toObject(map, ParticipantDcaeParameters.class);
+        final ValidationResult validationResult = participantParameters.validate();
+        assertNull(validationResult.getResult());
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java
new file mode 100644
index 000000000..c3cc8b755
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/rest/TestListenerUtils.java
@@ -0,0 +1,255 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.rest;
+
+import java.io.File;
+import java.time.Instant;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.UUID;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantState;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantControlLoopStateChange;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantControlLoopUpdate;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantHealthCheck;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStateChange;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.handler.DcaeProvider;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.intermediary.handler.ParticipantHandler;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.common.utils.coder.YamlJsonTranslator;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
+
+public class TestListenerUtils {
+
+    private static final YamlJsonTranslator yamlTranslator = new YamlJsonTranslator();
+    private static final Coder CODER = new StandardCoder();
+    private static final String TOSCA_TEMPLATE_YAML = "examples/controlloop/PMSubscriptionHandling.yaml";
+    static CommonTestData commonTestData = new CommonTestData();
+
+    @Getter
+    private static ParticipantHandler participantHandler;
+
+    /**
+     * Method to initialize participantHandler.
+     */
+    public static void initParticipantHandler() {
+
+        final ParticipantDcaeParameters parameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantDcaeParameters.class);
+
+        DcaeProvider dcaeProvider = new DcaeProvider(parameters);
+
+        participantHandler = dcaeProvider.getIntermediaryApi().getParticipantHandler();
+    }
+
+    /**
+     * Method to create a controlLoop from a yaml file.
+     *
+     * @return ControlLoop controlloop
+     */
+    public static ControlLoop createControlLoop() {
+        ControlLoop controlLoop = new ControlLoop();
+        Map<UUID, ControlLoopElement> elements = new LinkedHashMap<>();
+        ToscaServiceTemplate toscaServiceTemplate = testControlLoopRead();
+        Map<String, ToscaNodeTemplate> nodeTemplatesMap =
+                toscaServiceTemplate.getToscaTopologyTemplate().getNodeTemplates();
+        for (Map.Entry<String, ToscaNodeTemplate> toscaInputEntry : nodeTemplatesMap.entrySet()) {
+            ControlLoopElement clElement = new ControlLoopElement();
+            clElement.setId(UUID.randomUUID());
+
+            ToscaConceptIdentifier clElementParticipantId = new ToscaConceptIdentifier();
+            clElementParticipantId.setName(toscaInputEntry.getKey());
+            clElementParticipantId.setVersion(toscaInputEntry.getValue().getVersion());
+            clElement.setParticipantId(clElementParticipantId);
+
+            clElement.setDefinition(clElementParticipantId);
+            clElement.setState(ControlLoopState.UNINITIALISED);
+            clElement.setDescription(toscaInputEntry.getValue().getDescription());
+            clElement.setOrderedState(ControlLoopOrderedState.UNINITIALISED);
+            elements.put(clElement.getId(), clElement);
+        }
+        controlLoop.setElements(elements);
+        controlLoop.setName("PMSHInstance0");
+        controlLoop.setVersion("1.0.0");
+
+        ToscaConceptIdentifier definition = new ToscaConceptIdentifier();
+        definition.setName("PMSHInstance0");
+        definition.setVersion("1.0.0");
+        controlLoop.setDefinition(definition);
+
+        return controlLoop;
+    }
+
+    /**
+     * Method to create ParticipantStateChange message from the arguments passed.
+     *
+     * @param participantState participant State
+     *
+     * @return ParticipantStateChange message
+     */
+    public static ParticipantStateChange createParticipantStateChangeMsg(final ParticipantState participantState) {
+        final ParticipantStateChange participantStateChangeMsg = new ParticipantStateChange();
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        participantStateChangeMsg.setParticipantId(participantId);
+        participantStateChangeMsg.setTimestamp(Instant.now());
+        participantStateChangeMsg.setState(participantState);
+
+        return participantStateChangeMsg;
+    }
+
+    /**
+     * Method to create ControlLoopStateChange message from the arguments passed.
+     *
+     * @param controlLoopOrderedState controlLoopOrderedState
+     *
+     * @return ParticipantControlLoopStateChange message
+     */
+    public static ParticipantControlLoopStateChange createControlLoopStateChangeMsg(
+            final ControlLoopOrderedState controlLoopOrderedState) {
+        final ParticipantControlLoopStateChange participantClStateChangeMsg = new ParticipantControlLoopStateChange();
+
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        participantClStateChangeMsg.setControlLoopId(controlLoopId);
+        participantClStateChangeMsg.setParticipantId(participantId);
+        participantClStateChangeMsg.setTimestamp(Instant.now());
+        participantClStateChangeMsg.setOrderedState(controlLoopOrderedState);
+
+        return participantClStateChangeMsg;
+    }
+
+    /**
+     * Method to create ControlLoopUpdateMsg.
+     *
+     * @return ParticipantControlLoopUpdate message
+     */
+    public static ParticipantControlLoopUpdate createControlLoopUpdateMsg() {
+        final ParticipantControlLoopUpdate clUpdateMsg = new ParticipantControlLoopUpdate();
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        clUpdateMsg.setControlLoopId(controlLoopId);
+        clUpdateMsg.setParticipantId(participantId);
+
+        ControlLoop controlLoop = new ControlLoop();
+        Map<UUID, ControlLoopElement> elements = new LinkedHashMap<>();
+        ToscaServiceTemplate toscaServiceTemplate = testControlLoopRead();
+        Map<String, ToscaNodeTemplate> nodeTemplatesMap =
+                toscaServiceTemplate.getToscaTopologyTemplate().getNodeTemplates();
+        for (Map.Entry<String, ToscaNodeTemplate> toscaInputEntry : nodeTemplatesMap.entrySet()) {
+            ControlLoopElement clElement = new ControlLoopElement();
+            clElement.setId(UUID.randomUUID());
+
+            ToscaConceptIdentifier clElementParticipantId = new ToscaConceptIdentifier();
+            clElementParticipantId.setName(toscaInputEntry.getKey());
+            clElementParticipantId.setVersion(toscaInputEntry.getValue().getVersion());
+            clElement.setParticipantId(clElementParticipantId);
+
+            clElement.setDefinition(clElementParticipantId);
+            clElement.setState(ControlLoopState.UNINITIALISED);
+            clElement.setDescription(toscaInputEntry.getValue().getDescription());
+            clElement.setOrderedState(ControlLoopOrderedState.UNINITIALISED);
+            elements.put(clElement.getId(), clElement);
+        }
+        controlLoop.setElements(elements);
+        controlLoop.setName("PMSHInstance0");
+        controlLoop.setVersion("1.0.0");
+        controlLoop.setDefinition(controlLoopId);
+        clUpdateMsg.setControlLoop(controlLoop);
+        clUpdateMsg.setControlLoopDefinition(toscaServiceTemplate);
+
+        return clUpdateMsg;
+    }
+
+    /**
+     * Method to create ParticipantHealthCheck message.
+     *
+     * @return ParticipantHealthCheck message
+     */
+    public static ParticipantHealthCheck createParticipantHealthCheckMsg() {
+        ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+
+        ToscaConceptIdentifier controlLoopId = new ToscaConceptIdentifier();
+        controlLoopId.setName("PMSHInstance0");
+        controlLoopId.setVersion("1.0.0");
+
+        final ParticipantHealthCheck participantHealthCheckMsg = new ParticipantHealthCheck();
+        participantHealthCheckMsg.setParticipantId(participantId);
+        participantHealthCheckMsg.setControlLoopId(controlLoopId);
+        participantHealthCheckMsg.setTimestamp(Instant.now());
+        participantHealthCheckMsg.setState(ParticipantState.PASSIVE);
+
+        return participantHealthCheckMsg;
+    }
+
+    /**
+     * Method to create ParticipantControlLoopUpdate using the arguments passed.
+     *
+     * @param jsonFilePath the path of the controlloop content
+     *
+     * @return ParticipantControlLoopUpdate message
+     * @throws CoderException exception while reading the file to object
+     */
+    public static ParticipantControlLoopUpdate createParticipantClUpdateMsgFromJson(String jsonFilePath)
+            throws CoderException {
+        ParticipantControlLoopUpdate participantControlLoopUpdateMsg =
+                CODER.decode(new File(jsonFilePath), ParticipantControlLoopUpdate.class);
+        return participantControlLoopUpdateMsg;
+    }
+
+    private static ToscaServiceTemplate testControlLoopRead() {
+        return testControlLoopYamlSerialization(TOSCA_TEMPLATE_YAML);
+    }
+
+    private static ToscaServiceTemplate testControlLoopYamlSerialization(String controlLoopFilePath) {
+        String controlLoopString = ResourceUtils.getResourceAsString(controlLoopFilePath);
+        ToscaServiceTemplate serviceTemplate = yamlTranslator.fromYaml(controlLoopString, ToscaServiceTemplate.class);
+        return serviceTemplate;
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java
new file mode 100644
index 000000000..f779f3a57
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestMain.java
@@ -0,0 +1,151 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.ControlLoopConstants;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.Main;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeActivator;
+import org.onap.policy.common.utils.resources.MessageConstants;
+import org.onap.policy.common.utils.services.Registry;
+
+/**
+ * Class to perform unit test of {@link Main}}.
+ */
+public class TestMain {
+
+    /**
+     * Set up.
+     */
+    @BeforeClass
+    public static void setUp() {
+        Registry.newRegistry();
+    }
+
+    /**
+     * Shuts "main" down.
+     *
+     * @throws Exception if an error occurs
+     */
+    @AfterClass
+    public static void tearDown() throws Exception {
+        // shut down activator
+        final ParticipantDcaeActivator activator =
+            Registry.getOrDefault(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR,
+                            ParticipantDcaeActivator.class, null);
+        if (activator != null && activator.isAlive()) {
+            activator.shutdown();
+        }
+    }
+
+    @Test
+    public void testMain_Help() {
+        final String[] configParameters = {"-h"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Version() {
+        final String[] configParameters = {"-v"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Valid() {
+        final String[] configParameters = {"-c", "src/test/resources/parameters/TestParameters.json"};
+        Main main = new Main(configParameters);
+        assertTrue(main.isRunning());
+
+        // ensure items were added to the registry
+        assertNotNull(Registry.get(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR, ParticipantDcaeActivator.class));
+
+        assertThatCode(() -> main.shutdown()).doesNotThrowAnyException();
+
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_NoParameter() {
+        assertThatConfigParameterThrownException(new String[] {});
+    }
+
+    @Test
+    public void testMain_FilePathNotDefined() {
+        assertThatConfigParameterThrownException(new String[] {"-c"});
+    }
+
+    @Test
+    public void testMain_TooManyCommand() {
+        assertThatConfigParameterThrownException(new String[] {"-h", "d"});
+    }
+
+    @Test
+    public void testMain_WrongParameter() {
+        assertThatConfigParameterThrownException(new String[] {"-d"});
+    }
+
+    private void assertThatConfigParameterThrownException(final String[] configParameters) {
+        assertThatThrownBy(() -> Main.main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+
+    @Test
+    public void testParticipant_NoFileWithThisName() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoFileWithThisName.json");
+    }
+
+    @Test
+    public void testParticipant_NotValidFile() {
+        assertThatConfigFileThrownException("src/test/resources/parameters");
+    }
+
+    @Test
+    public void testParticipant_NoParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoParameters.json");
+    }
+
+    @Test
+    public void testParticipant_InvalidParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/InvalidParameters.json");
+    }
+
+    @Test
+    public void testParticipant_WrongJsonFormat() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/Unreadable.json");
+    }
+
+    private void assertThatConfigFileThrownException(final String configFilePath) {
+        final String[] configParameters = new String[] {"-c", configFilePath};
+        assertThatThrownBy(() -> new Main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java
new file mode 100644
index 000000000..1903868e2
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/test/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/TestParticipantDcaeActivator.java
@@ -0,0 +1,94 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.dcae.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeActivator;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.startstop.ParticipantDcaeCommandLineArguments;
+import org.onap.policy.common.utils.services.Registry;
+
+/**
+ * Class to perform unit test of {@link ParticipantDcaeActivator}}.
+ *
+ */
+public class TestParticipantDcaeActivator {
+
+    private static ParticipantDcaeActivator activator;
+
+    /**
+     * Initializes an activator.
+     *
+     * @throws Exception if an error occurs
+     */
+    @BeforeClass
+    public static void setUp() throws Exception {
+        Registry.newRegistry();
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json"};
+        final ParticipantDcaeCommandLineArguments arguments =
+                new ParticipantDcaeCommandLineArguments(participantConfigParameters);
+        final ParticipantDcaeParameters parGroup =
+                new ParticipantDcaeParameterHandler().getParameters(arguments);
+        activator = new ParticipantDcaeActivator(parGroup);
+    }
+
+    /**
+     * Method for cleanup after each test.
+     *
+     * @throws Exception if an error occurs
+     */
+    @AfterClass
+    public static void teardown() throws Exception {
+        // shut down activator
+        if (activator != null && activator.isAlive()) {
+            activator.shutdown();
+        }
+    }
+
+    @Test
+    public void testParticipantActivator() {
+        activator.start();
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, activator.getParameters().getName());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.start());
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+
+        activator.shutdown();
+        assertFalse(activator.isAlive());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.shutdown());
+        assertFalse(activator.isAlive());
+    }
+}